15/100 = 15%
A value like 15/100, or 15%, can show up in everyday life as a discount, a test score, a tip, or the amount of a budget spent on one category. For example, a store might take 15% off a jacket, or 15% of students might participate in an activity.
To picture 15% quickly, imagine a group of 100 items with 15 highlighted. You can also think of it as a little less than one-fifth, since one-fifth is 20%.
A common mistake is thinking 15% means 15 items no matter how large the total is. It means 15 out of every 100, so the actual number changes depending on the size of the group.
